US1181469A - Swing. - Google Patents

Description

J. 1. MARTlN.

SWING.

APPLICATION FILED AUG-17,1915.

Patented May 2, 1916.

5 SllEETS-SHEFT I.

J. L. MARTIN.

SWING.

APPLICATION FILED AUGJ]. 1915.

1,181,469, Patented May 2,1916.

5 SHEET-$SHEET 2.

I. L. MARTIN.

SWING.

APPLICATlON FILED Aue.17.1915.

Patented May 2,1916.

5 SHEETS-SHEET 3- e w U J. L. MARTIN.

SWING.

APPLICATION FILED AUG- l7| I915.

l 1 8 1 A69. Patented May 2, 1916.

5 SHEETS-SHEET 4.

J. L. MARTIN.

SWING.

APPLICATION FILED Aus.11.19|5.

II/IIIIIII/IIIII "III! llllllllllll -ifl Patented May 2, 1916. I

5 SHEETS-SHEET 5- uric.

JOHN I. MARTIN, 0F CLEVELAND, OHIO.

SWING.

Application filed August 17, 1915.

To all whom it may concern Be it known that 1, JOHN L. MARTIN, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and useful Swing, of which the following is a specification.

My invention relates to that class of swings that have an oscillating movement, and which are operable by manual power or by foot power or by both powers exerted or put forth by the passengers thereon.

Heretofore, in the class of swings mentioned, the various means chosen for operating the swing have failed to give full satisfaction, owing to the limited amplitude of the arc of vibration produced and owing tolack of ease and convenience in their manipulation except in short arcs of movement. It is generally conceded that the pleasure and exhilaration in swinging are enhanced in proportion to the length of oscillation.

The primary objects of my invention are, first, to provide a swing which can be actuated by the operators or passengers thereon within any desired amplitude of space to the extent of the quadrant of a circle or even to 120 by either hand power or by foot power or by both powers combined; second, to provide an operating mechanism that is eflicient, convenient, easy, and pleasing; and third, to offset or to counterbalance the weight of the car and partially also that of the passengers thereon.

Other, secondary objects will be set forth hereinafter.

I attain these objects by the construction and mechanism illustrated in the accom panying drawings, in which- Figure 1, is a side elevation of one form of my swing fully completed; Fig. 2, is a plan view on the line 22, Fig. 1; Fig. 3, is a transverse vertical section of the same through the center; Fig. l, is a partial view in side elevation of a modified form of my swing showing a vertical section of the car; Fig. 5, is an end view or elevation of the same showing only part of the operating mechanism with floor in section; Fig. 6, is a view illustrating the stop and the stop holder, the former attached to one of the members or uprights carrying the operating mechanism on the car shown in Figs. 4, 17, 18, and the latter attached to a Specification of Letters Patent.

Patented May 2, 1916. Serial No. 45,996.

section of the modified form of the track; Fig. 7 is a vertical section near the middle of a modified form of the car not completed showing also a modified form of the operating mechanism; Fig. 8, is a top View of the middle of the modified car partially shown in Fig. 7; Fig. 9, is a side elevation of an outer upright of said modified car showing the same pivoted on the hangers and a View of an intermittent elastic brace; Fig. 10, is an edge view of the same; Fig. 11, is a vertical section of a hollow case to serve for a sand weight; Fig. 12, is a side elevation of a casting provided with anti-friction rollers or wheels on which to mount the suspension rods; Fig. 13, is an end elevation of the same; Fig. 14, is a side elevation of a section of a modified form of the track on which a sprocket chain is mounted; F ig. 15, is a side elevation of a pawl and a ratchet used as a substitute for a locking pin on the weight shifting device; Fig. 16, is a View of a spiral spring provided at one terminal with a plurality of chain links; Fig. 17, is a side elevation of the modified form of swing shown in part in Fig. 4; Fig. 18, is a transverse vertical section of the same near the center; and Fig. 19, is a front or edge view of the construction shown in Fig. 6, the track and stop holder being in vertical section.

Similar numerals refer to similar parts throughout the several views; and lettered numerals refer to parts modified in form, position, Or use yet related to those first indicated by the numeral alone.

The principles of my invention may be embodied in several forms of structure as illustrated. They may also be incorporated in a swing having four hangers as well as in one having two hangers. The preferred form will be set forth in the appended claims.

The supporting frame of the swing comprises two oppositely disposed pairs of oblique legs or standards 1, each supported by a foot plate 2, connected near their lower terminals by a tie board or member 3, made rigid laterally by the braces 4, made rigid longitudinally by the braces 5, and connected at their upper terminals by the top rails 6, connected by the tie-bars 7. A pair of similar curved bars 8, connected throughout their entire length by a plurality of spaced rungs or bars 9, providing a plurality of fulcrums or supports for a swinging toothed wheel, constitute the track. The track is mounted on the said tie'boards 3 in a central recess 10, and secured against displacement by the cleats or bars 11, bearing against the inner faces of the tie-boards, and said track is disposed to be concentric with the arc described by the car in swinging to and fro.

Two hangers 12, spaced apart and connected by cross bars 13, at their upper terminals and also below their bearings are rigidly mounted intermediate their ends on the middle of the suspension shaft 1a, to provide depending members to swing in the said frame and short extension members to swing above the frame, said shaft being journaled on the top rails 6 of the frame in the blocks 15, and being provided with spacing sleeves 16. Between these hangers near their lower terminals is rigidly mounted on two oppositely disposed crank shafts 17, the toothed driving wheel 18, adapted to engage the rungs or bars of said track. This wheel is suitably housed within walls which are secured to a plurality of braces 19, secured at their upper ends to the inner faces of the hangers and extending diagonally outward and downward.

The frame of the car comprises a longitudinally disposed horizontal beam 20, mounted centrally on and between the braces 19, and carrying a plurality of transversely disposed seats 21, on its terminals; a plurality of uprights 22, secured to the ends of the seats, connected transversely by the back boards or members 23, at their upper ends, and suitably connected at their lower ends by the longitudinally disposed base boards 21; and a narrow floor 25, under and before each seat suitably attached to said uprights 22, the base boards 24 and the walls inclosing said wheel.

Two operating bars 26, are mounted intermediate their ends to oscillate on the hangers 12 on opposite sides of the same at a convenient distance above said wheel 18. A plurality of guide bars 27, are mounted to oscillate on the hangers parallel with the operating bars 26 at a distance below the same. A plurality of pedal hangers 28, are pivotally and dependingly mounted on the terminals of the said bars by which a swinging connection is effected between similarly disposed terminals and by which said pedal hangers are maintained or guided in vertical position. Said hangers are provided with a plurality of laterally extending spaced pedals 29; distributed upwardly from their lower terminals in adaptation to the needs of varying sizes of operators. At a convenient distance below the upper terminals are attached suitable handle bars 30. On the guide bars 27 near one terminal and oppositely disposed are pivoted the crank drivers or pitmen 31, engaging the horizontal outer terminals of the crank shafts 17, formed into suitable levers by which to rotate said wheel mounted thereon. Spacing sleeves 32, on the bearing or pivot shaft on which the guide bars are mounted prevent lateral shifting of the pedal hangers.

Two similar vertically disposed bars 33, spaced. apart and connected at their lower ends by the bar 3%, and at their upper ends by the bar 35, the latter carrying the grooved pulley 36, constitute the telescope which is slidably mounted on and between the hangers 12 at their upper part and which carries the several movable weights 37. weights are suspended from a cord 38, passing through a central rectangular aperture in the same provided for the insertion of the telescope, said weights being secured at one end to a transverse rod 39, attached to the lowermost weight, passing over said pulley, and secured at the opposite end to the shaft 1-0, of the winch 11, which turns in the bearing blocks or straps 42, secured to the edges of the hangers and conveniently disposed. The said winch is locked by the removable pin 13, interposed in its path. A movable pin or bolt 14:, passing through the hangers provides a support for the telescope which may be adjusted vertically by a plurality of perforations in the hangers.

This swing is designed to seat four persons, one for each pedal hanger, though it may be operated by one alone. It may be operated manually by means of the handle bars 30 or by treading the pedals 39 or by both hand and foot power. As the pedal hangers are reciprocated the crank drivers impart the motion to the crank shafts 17 causing the wheel 18 to revolve whose teeth successively engage the rungs of the track and the leverage thus obtained forces the car in the direction taken by the wheel. Motion in either direction is limited by a spring buifer secured to each end of the supporting frame which consists of the swinging members 45, pivoted at one end to the legs 1 and connected at the opposite ends by the transverse bar 416, which is provided with a plurality of screw eyes 47, in engagement with extension spiral springs 48, said springs being oppositely engaged by screw eyes secured to the tie board 3. The contact points of the car with the buffers are on the vertical edges Q9, of the base boards 24, said edges cutting said tie boards at the recesses 50. I

The said telescope and the weight thereon being oppositely disposed to the car and bearing against the bars or cleats 13, constitute a lever acting upon the suspension shaft 1st, through the medium of the hangers 12, by means of which the weight of the car and the occupants thereof may be par- Said 7 tially or entirely balanced at will, said weight being suitably adjusted by means of said winch. While such balance may be effected I deem it more desirable to retain some measure of overbalance in the car. On leaving the car the passengers must lower the weights by unwinding the cord on the shaft of the winch.

As the momentum of the car when oscillating in full amplitude is liable to rock the supporting frame or to move the same, I overcome this tendency by means of the screw eyes 51, two of which are secured to each tie bar 7 on said frame and to which guys may be attached. However, inasmuch as the weights will always swing in a direction counter to the car the said tendency is largely thus counteracted.

In the modified form of my swing Figs. 4, 17 and 18, I use four hangers as the means to preserve the car level in position; I also use a different connection between the operating bars and the driving wheel. The four hangers 52, are rigidly mounted in pairs intermediate their ends on each one of two spaced and parallel suspension shafts 53, to provide depending members to swing in the supporting frame and short extension members to swing above the frame, said shafts being journaled at their terminals on the top rails 6 of the frame in the blocks 15 and the respective members of the hangers being connected by rocking shafts 54, disposed to be parallel with the shafts 53 and the upper of the same being fitted with spacing sleeves A rocker 56, on which to mount and to swing the telescope and a weight thereon, formed to be similar to the upper half of the connected hangers 12, Fig. 1, similarly mounted on the shaft 14, having depending and upper members, has pivoted on said members on opposite sides thereof a plurality of horizontal oscillating bars 57, connecting rocking shafts 54 carried by the adjacent similar members of the hangers 52, said rocker being disposed between the hangers. The rocker is provided with an elevator consisting of spaced sprocket wheels 58, revolubly mounted on bearings suitably attached to the edges of the rocker and carrying a sprocket chain 59, attached by one or more links to the side of said telescope, the shaft on which the lower of said wheels is rigidly mounted being provided with a crank and handle to form a winch 41. In Fig. 15, is given an enlarged view of this winch in which a ratchet wheel 60, is rigidly mounted on the shaft 40% and a pawl 61, engaging said wheel is shown pivoted on the lower end of the rocker as the substitute means for locking the winch instead of the removable pin 43, shown inFig. 1.

A modified form of the car is pivoted on the lower terminals of the hangers 52, at

the middle of the base boards 24, which are connected with the uprights 22, supporting the seats 21, by the floor sills 62. Not having a central support as in Fig. 1, the beam 20, under the seats rests at its terminals on the transverse beams 63 connecting the uprights. An erect frame on which to mount the opera ting mechanism is formed of members 12 corresponding to the lower half of the hangers 12. Figs. 1. and connected by the pieces 64, and 65, the said members 12 being centrally-hung on and secured to the longitudinal beam 20. A toothed driving wheel 18 having attached concentrically and rigidly thereto a smaller toothed or sprocket wheel 66, is revolubly mounted on the shaft 17 between the members of said frame near their lower ends, and similar operating bars, guide bars, and pedal hangers, to those in Fig. 1, are mounted on the frame in a similar manner. An upward pull on the pedal hanger to be effective and easy makes a support for one foot desirable, if not even necessary; hence, I provide a plurality of laterally disposed and spaced foot rests 67, the equivalent of the inner half of the pedal shown in Figs. 1 and 3, secured to the floor of the car and to semi-circular guard walls 68, attached to the inner sides of said frame and to the beam 20. I also deprive the pedal hangers of the corresponding halves of the pedals 29. The pedals remaining will be suflicient; for the available weight of the operator can easily be applied on said pedals by one foot alone. The remaining pedals may be formed in one integral piece as illus trated in Fig. 5. Also I may cast the said driving wheel and the small sprocket wheel into one piece.

I provide means for multiplying the speed produced and the distance covered by the hands and feet of the operators. A long auxiliary operating bar 26", is centrally mounted parallel with the operating bars 26, on the cross bars 69, connecting the oppo site ends of the latter, the said auxiliary bar 26 having secured to its terminals the semicircular metallic bow 70, and having slidably mounted thereon near its terminals the flattened hooks 71, secured adjustably by means of the slots 72, and engaging the terminal links of the sprocket chain 73, which intermediately engages the small sprocket wheel 66. The said chain is spaced apart and kept from contact with the seats and their backs by means of said bow and is guided into engagement with said wheel. 66, by means of the two rollers 74, loosely mounted on the pivots 75, secured to the guard walls 68. By these combined means either a downward or an upward movement of the pedal hangers within the full compass of the hands and feet of the operators will swing the car the entire length of the track, it being understood that the relative sizes of the sprocket wheels are correctly calculated with reference to the length of the track and that the auxiliary bar 26 is made of sufficient length.

Handle bars for my swing may have various forms. In Fig. 5, is shown a wide bar 30 presenting a choice of two grips 76, for each hand of the operator, said bar connecting two of the pedal hangers. This bar may be divided by the removal of a piece 77, from the middle leaving an independent bar having two sets of grips for each pedal hanger which is necessary in another modified form of the car hereinafter described.

In Fig. 6 I illustrate a stop for my swing which consists of a vertically disposed bar 78, carrying a small wheel or roller 79, mounted to rotate at its lower end in a recess 80, formed therein. The said bar 78 is provided at its upper end with a finger lift 81, and is provided intermediate its ends with a slot 82 for slidably mounting the same on the pivot 83, secured to the side of the upright or member 12"" and on the end of the shaft 17, of the toothed driving wheel. The roller 7 9, is shown in locked engagement with the stop holder 84, in the semi-circular recess 85, formed in its upper edge at the middle from which it may be released by lifting the stop by means of the finger lift. The said" holder has its upper edge formed with easy slopes on both sides of the recess and leading thereto, and is mounted on the pivot 86, secured to a vertical slot in the outside of the curved bar 8, forming one member of a track adapted for the use of a sprocket chain and illustrated in Fig. 19. The stop is so adjusted that the roller will strike the said edge of the stop holder in swinging to and fro causing the same to roll upwardly and thus to raise the stop. Before it has time to fall the momentum of the car carries it beyond the recess 85; but when the oscillation of the car becomesquite slow the roller will drop into the recess and tend to lock the car. To avoid violent shocks and to effect a yielding action I mount said holder on the spiral spring 87, disposed horizontally and suitably secured at its terminals to the member 8 of the track. When the roller first engages the edges of the recess the force of the impact tends to tilt or rock the holder on its pivot causing the curved lower edge of the latter to rock on or to bear on the spring which will yield sufiiciently to release the roller, and yet to hold the same on the second or the third impact. The stop and the holder are a safeguard against the negligence of the occupants of the car who are liable to leave the car without lowering the weight; and they are attachable to two other forms of the car herein described.

I present one more form or arrangement of my car which seems the most compact and simple for four persons, and which illustrates further modifications in the operating mechanism. The frame of this car comprises four wide similar uprights 88, (Figs. 7, 8, and 9) spaced apart, connected by the tie or back members 89, provided with floor sills 90, and carrying a plurality of seats 21, arranged on both sides ofthe lower tie member and connecting respectively each outer upright with the adjacent inner upright. Near the upper terminals of the inner two of said uprights and between the same are mounted to oscillate the short operating bar 26, and the longer operating bar 26, rigidly secured together, each provided with long pivot bearings 91, oppositely disposed at equal distances from the central shaft or bearing 92, and the latter bar also being provided with short pivot bearings 93, at its terminals. A short guide bar 27, and a longer guide bar 27, similarly secured, similarly provided with pivot bearings are similarly mounted on said uprights at a distance below the bars 26 and 26 to oscillate parallel with the same. A pair of oppositely disposed horizontal reciprocating bars 94, broadly formed at their outer terminals and provided with vertically adjustable hooks 95, at their narrow inner terminals are mounted on said pivot bearings at the terminals of said longer bars 26 and 27 connecting these similarly disposed. A sprocket chain 7 3 engages said hooks at its terminals and engages intermediate its ends the small sprocket wheel 66, secured to the driving wheel 18, mounted on the shaft 17,

as illustrated in Fig. 18.

lVhen said bars 26, 26, 27 and 27 are operated the terminal pivot bearings of the longer bars will maintain the reciprocating bars in horizontal position in moving up and down with the effect of reciprocating said hooks and said chain. The said wheels are therefore rotated and will swing the car over and along the track.

From previous specifications it will be obvious how a plurality of pedal hangers fully equipped are to be mounted on the long pivot bearings 91 and centrally in front of said seats. When the pedal hangers are equipped with the handle bar 30*, the central portion 77, is removed to avoid 0bstructing the path of oscillation of the reciprocating bar 94:. By the disposition of the seats the operators are seen to face outwardly with backs turned to the middle of the car. Let it be noted that the object served by the long bars is to gain speed and distance of motion though at the expense of power; and that the object served by the reciprocating bars is to deliver the same near the center of the car.

Let it be noted that I have spaced the hangers 52, quite close together. One of the reasons is that it enables me to build the supporting frame compactly. One result however is that the lower terminals of the hangers 52, the outer uprights S8, and the sills 90 thereon are subjected to severe strains in arresting extreme momentum of the car. I therefore provide an intermittently acting elastic brace for each side of the car. On the horizontal bar 96, pivoted at its ends on the hangers is centrally pivoted the horizontal outwardly turned terminal of the vertically disposed swing rod 97, and on the hook 98, secured to the terminal of the lower tie member 89, is hung the terminal eye of the spiral extension spring 99, the opposite terminal eye of the same engaging the horizontal inwardly turned terminal of said swing rod 97 (Figs. 9 and 10). Bearing in mind that the upright 88, of the car always remains vertical in position during oscillation while the hangers swing at changing angles with the same, a connection between the latter and the depending spring will cause it to swing also. Spring action or tension however is undesirable at angles of less than about 45. The use of the swing rod for an intervening connection prevents such action and elastic bracing until desired.

I also provide a plurality of spiral extension springs 120 having several chain links connected with one terminal similar to Fig. 16, for arresting extreme momentum of the weight 37 to be used when found necessary at the opposite ends of the swing. For this purpose I have secured to the middle of both of the inner end braces l of the supporting frame the inwardly extending hooks 100, Fig. 17. The terminal links of said springs engage said hooks and the opposite terminals of the springs engage therocking shaft 54, nearest to each. The use of the chain links provides slackness of tension on the springs, except when said weight oscillates near the extreme of amplitude.

I do not limit myself to the form of the weights, their number, nor to the material used. I may use a hollow case such as is illustrated in Fig. 11, which consists of an upper and a lower disk or head 101, spaced apart, and connected by the inclosing wall 102, and mounted on the upper terminal of the telescope previously described, the lower disk also having support on the cleats 103, attached to the telescope. The upper disk is provided with an orifice 104, protectedby the cover 105, for charging the case with sand; and the lower disk is provided with a central orifice 10%, for the: discharge of the sand or other loading material, and is also provided with a. suitable sliding closure 106, supported by the cleats 107. Sand is much cheaper than metal; and its use saves cost of transportation of one or more weights.

I do not restrict myself to the use of the rocker, the telescope, and the weight singly.

I may mount a rocker on each of the outer suspension shafts, and guide the same by the rocking shafts on the hangers directly, thus simplifying the structure. I may also provide a cheaper structure by using fixed weights attached to the upper terminals of the hangers.

I do not limit myself to the use of the bars or rungs in the track shown in Figs. 1 and 2, for fulcrums or supports for the driving wheel. I find an excellent equivalent means in a sprocket chain theend bars of the links thereof being exactly adapted to a toothed driving wheel. In Fig. 14, is illustrated a section of a track inclosing a portion of such a chain 108. In a complete track the terminals of such chain are to be secured suitably, as by adjustable hooks 95, to cleats or cross bars similar to 109, connecting the members of the track. As a curved tension can not be produced with out support I modify the members 8, of the track by forming them with rabbets 110, in their inner faces cut from their lower edges, as is shown in Fig. 19. A continuous bearing is thus provided for the side bars of the links of such chain. In Fig. 14, is also illustrated a rigid stop holder 8%.

Anti-friction bearings are very desirable for the hangers and I have provided such in lieu of the crude inexpensive bearings thus far shown. To the top rail 6, of the supporting frame, Fig. 12, is secured a casting consisting of the plate 111, having depending flanges 112, and upwardly turned flanges 113, on both the inner and the outer edges thereof each of the latter having two spaced centrally disposed upright members 111. and a short upright member 115 at each end thereof. In the upwardly opening recesses 116, of the upturned flanges at the upright members 115, are pivoted the bearings 117, of the segments 118, of two disks or wheels equal in diameter, the one having a single segment and the other having two segments disposed to form an obtuse angle between the same. When these segments are properly disposed, those adjacent to each other being inclined to each other, the suspension shaft 53, may be mounted between the members 114, to roll on the peripheries of the segments so inclined. The segments being long compared to the diameters of their bearings it is evident that the rolling of said shaft to the extent of one-third of a revolution, the probable limit, will produce only a slight movement or little friction on said bearings. This disposition of the segments makes them serve as rocking braces for the weight suspended on said shaft. It

will be-seen that the members 11 1, serve as guards to prevent the dismounting of said shaft. There is no interference between these segments as they do not move in the same plane. The depending flanges save an extra bolt. If two such castings with segments of disks thereon are oppositely mounted on said rail and properly spaced, it will be seen that the segments of each projecting outwardly beyond the castings will apparently meet; hence the middle shaft 14, supporting the rocker may be mounted on the latter segments. I may also provide the car with similar antifriction bearings inverting them in position to bear downward on the pivots at the lower terminals of the hangers,

and mounting them on a similar rail to be secured to the side of the car a little higher than the spacing block 119, Fig. 10.

I do not wish to be limited to the specific details of the several forms of construction illustrated and described, but wish to be protected in the several alterations and modifications which may come within the scope of the appended claims.

Having thus described my invention I claim:

1. A swing comprising a supporting frame; a curved track mounted on the frame in longitudinal alinement with the same; hangers mounted to depend from and to swing in the frame; a carriage or car carried by the hangers; and operating means carried by the car and connected with the track for operating the said car to swing the same over the said track.

2. A swing comprising a supporting frame, a curved track mounted on the frame in longitudinal alinement with the same; hangers mounted to depend from and to swing in the frame; a car carried by the hangers; and oscillating means actuated by the passengers for operating the car and connected with the track to swing said car over the said track.

3. A swing comprising a supporting frame; a curved track mounted on the frame in longitudinal alinement with the same; bufiing means or apparatus disposed at each end of the track and connected with the frame; hangers mounted to depend from and to swing in the frame; a car carried by the hangers; oscillating means mounted on the car actuated by the passengers and connected with the track for operating the car to swing the same over the said track. I 4. A swing comprising a supporting frame; a curved track mounted on the frame and hangers mounted to depend from and to swing in the frame and having oppositely extending members to swing above the frame; a weight disposed to swing above the frame counter to the car and connected with said members of the hangers; a car carried by the hangers; and oscillating means mounted on the car actuated by the passengers thereon and connected with the track for operating the car to swing the same over the track.

5. A swing comprising a supporting frame; a curved track mounted on the frame and provided with a plurality of spaced fulcrums or supports; a plurality of spaced hangers mounted to depend from and to swing in the frame and having oppositely extending members to swing above the frame; a weight disposed to swing above the said frame counter to the car and con nected with the hangers; means for shifting said weight relatively to its axis of oscillation; a car carried by the hangers; operating means carried by the car for engagement with said spaced fulcrums or supports of the track and oscillating means mounted on the car operable by the passengers thereon and connected with the said operating means to swing the car over the track.

6. A swing comprising a supporting frame; a curved track mounted on the frame and provided with a plurality of spaced fulcrums or supports; a plurality of spaced hangers having oppositely extending members the depending members being mounted to swing in the frame the opposite members swinging above the frame; a rocker mounted intermediate its ends on the frame between the hangers having the upper and the lower members thereof loosely connected with the hangers and adapted to swing or rock counter to the car; a slidable or telescopic frame loosely engaged by the rocker; an elevator for shifting the telescopic frame; a weight carried by said telescopic frame; a car mounted on the hangers; operating means carried by the car for engagement with said spaced fulcrums or supports of the track and oscillating means mounted on the car operable by the riders thereon and connected with the said operat' ing means to swing the car over said track.

7 A swing comprising a supporting frame; a curved track mounted on the frame and provided with a plurality of transverse spaced fulcrums or supports;

three spaced suspension shafts in parallel arrangement having suitable bearings on the top of said frame; a pair of hangers having oppositely disposed members rigidly mounted on each of the outer of said shafts the depending members to swing in the frame the erect members to swing above the frame, the latter being connected at their terminals by a rocking shaft having spacing sleeves the former also being connected by a rocking shaft;'a rocker formed of upright bars, spaced apart, rigidly connected, mounted intermediate its ends on the middle suspension shaft, and having both the upper and the lower members thereof provided with external pivot bearings carrying bars loosely connecting the rocking shafts oppositely disposed to said pivots, by which connections oscillating motion is received by the rocker; a slidable or telescopic frame formed with a pair of spaced upright bars rigidly connected at the ends and loosely engaged or embraced by the rocker; a Weight mounted on the upper end of said telescopic frame; an endless sprocketchain, carried by two spaced sprocket wheels rigidly mounted on shafts turning in bearings secured to the rocker, suitably attached to the lower end of the telescopic frame, operated manually by handle and crank connections with the lower of said Wheels, and stayed by a movable look ing device; a car carried by the hangers; and oscillating mechanism mounted on the car operable by the riders thereon and connected with the said track to swing the car over the track.

8. An oscillating swing comprising a supporting frame provided at each end with a transverse member; a curved track formed. with two similar curved members, spaced apart, rigidly connected, mounted on said transverse members of the frame engaging the same provided with a plurality of spaced fulcrums or supports; hangers mounted to depend from and to swing in the frame; a car mounted on the hangers having erected centrally thereon a pair of spaced and rigidly connected uprights; a plurality of operating bars mounted to oscillate at the upper ends of said uprights; a toothed driving wheel mounted to rotate between said uprights neartheir lower tenninals and engaging the spaced fulcrums of said track; and a connection between the said operating bars and the said wheel for revolving the same to swing the car over the track.

9. A swing comprising a supporting frame provided at each end with a transverse member; a. curved track mounted on said transverse members and having a plurality of spaced fulcrums or supports; hangers mounted to depend from and swing in the frame; a car borne by the hangers and having a pair of spaced and connected uprights mounted centrally thereon; a plurality of operating bars mounted to oscillate at the upper ends of the said uprights; a plurality of guide bars mounted on the uprights below the operating bars to oscillate parallel with the same; a plurality of spaced and oppositely disposed pedal hangers dependingly mounted on and connecting the parallel bars, and actuated by riders seated on the car; atoothed driving wheel mounted to rotate between said uprights near their lower terminals and engaging the spaced fulcrums of said track; and a connection between said operating bars and said wheel to revolve the same to swing the car over said track.

10. A swing comprising a supporting frame; a curved track having a plurality of spaced fulcrums or supports; hangers mounted to depend from and swing in the frame; a car borne by the hangers and having a plurality of spaced and connected uprights mounted centrally thereon; a pair of connected operating bars mounted on a shaft to swing between and at the upper ends of said uprights, each provided with oppositely disposed pivot bearings equally spaced from said shaft, and one of said bars being the longer having pivot bearings also at its terminals; 3 pair of connected guide bars mounted on a shaft to swing between said uprights intermediate their ends, each provided with oppositely disposed pivot bearings equally spaced from the latter shaft, and one of said bars being the longer having pivot bearings also at its terminals; a plurality of pedal hangers dependingly mounted on and connecting said pivot bearings, those at the terminals of the longer bars being excepted, each having operating means for engagement by the passengers; "a pair of oppositely disposed horizontal reciprocating bars broadly formed at their outer terminals and mounted at the same on the terminal pivot bearings of the spaced fulcrums of said longer bars, whereby the vertically reciprocating motion produced at said pivot bearings is imparted to the inner and relatively narrow terminals of the re ciprocating bars; a toothed driving wheel mounted revolubly between said uprights near their lower terminals, engaging said.

track. and having revolubly secured to the side thereof a smaller toothed wheel; and a flexible connection between said inner terminals of the reciprocating bars and the said smaller wheel to rotate said driving wheel to swing the car over said track.

11. An oscillating swing comprising a supporting frame: a curved track mounted centrally on the frame and having a plurality of spaced fulcrums or supports: hangers mounted to depend from and swing in the frame; a car having four spaced uprights, provided with floor sills, connected transversely by a plurality of back or tie members intermediate their vertical edges, and carrying a plurality of seats oppositely disposed to said tie members, said car being mounted to swing on the outer two of said uprights; a pair of connected operating bars mounted on a shaft to swing between and at the upper ends of the central two of said uprights, each provided with oppositely disposed pivot bearings equally spaced from said shaft; a pair of connected guide bars mounted on a shaft to swing between the central. two of said uprights intermediate their ends, each provided with oppositely disposed pivot bearings equally spaced from the latter shaft; a plurality of pedal hangers dependingly mounted on and connecting said pivot bearings, each having a plurality of laterally extending pedals secured thereto along the lower portion thereof adapted to a single foot of the operator and provided with a suitably disposed handle bar having a plurality of grips; a plurality of laterally extending stationary foot supports secured to the floor of the car at the front of the seats for the opposite foot of the operator; actuating means carried by the 02 r for engagement with the spaced fulcrums of said track; and connecting means between said operating bars and said actuating means to swing the car over said track.

12. An oscillating swing comprising a supporting frame having end braces and a plurality of oppositely disposed inwardly extending hooks secured to the braces at both ends of the frame; a curved track having a plurality of spaced fulcrums or sup ports; a pair of hangers pivotally mounted on each side of the frame; a car carried by ha'hgers; oscillating mechanism mounted on the car operable by the riders thereon and connected with the spaced fulcrums of said track to swing the car over the track; an intermittently acting brake mechanism comprising extension spiral springs disposed on opposite sides of the car with one end engaging the same intermediate its vertical terminals to swing therefrom, horizontal bars connecting said hangers on each side of the car, and vertically disposed swing rods having upper horizontal terminals pivoted on said horizontal bars and lower horizontal terminals pivoted on the lower ends of said springs; and an auxiliary intermittently acting brake mechanism comprising shafts connecting said pairs of hangers transversely near their pivots, short sections of chain engaging the end braces of the frame with one terminal link, and extension spiral springs engaging said shafts with one end and with the opposite ends engaging the remaining terminal links of said sections of chain.

13. In an oscillating swing, a supporting frame; hangers mounted to depend from and swing in the frame; a car carried by the hangers; operating means carried by the car and consisting of a sprocket driving wheel; a curved track mounted on said frame under and in a linement with the path of oscillation of said wheel and in engagement with the same, said track having its terminals connected by a sprocket chain arranged in a curve therein; and! oscillating mechanism mounted on the car and connected with said wheel to revolve the same and swing the car over the track.

14. An oscillating swing comprising a supporting frame; a curved track mounted on the frame and provided with spaced ful-- crums or supports; hangers mounted to de pend from and swing in the frame; a car carried by the hangers; operating means carried by the car and connected with said spaced fulcrums of the track; and oscillating mechanism mounted on the car reciprocated vertically, actuated manually and pedally, and connected with said operating means to swing the car over the track.

15. In combination, an oscillating swing having a weight mounted thereon to swing above the supporting frame counter to the car and having a curved track mounted centrally on said frame under and in alinement with the path of vibration of the car, a stop consisting of an oblong upright block, having a finger lift at its upper end, having formed in the inner face of the lower end a recess, having pivoted in said recess a small wheel or roller, having formed therein a longitudinal slot, two pivots extending laterally from the car loosely mounted in said slot; at suitable stop holder on said track adapted to be engaged by said stop when the car is swinging slowly, substantially as specified.

16. In an oscillating swing a supporting frame, a car provided with a stop having a roller on its bottom end, a weight disposed to swing counter to the car, a curved track mounted centrally on the supporting frame under and in alinement with the path of vibration of the car, a stop holder consisting of a block having a semi-circular recess formed in its upper edge with downwardly and outwardly extending slopes leading from both sides to said recess, havingthe ends of the lower edge formed in upward curves for rocking action, based on a spiral extension spring horizontally disposed and terminally secured to said track, and disposed in the path of the roller of the said stop on the car to arrest slow vibration and to lock the car substantially as specified.

17. In an oscillating swing, a supporting frame, a curved track mounted centrally on the supporting frame and having a sprocket chain disposed in a curve therein, a car supported from and swinging in said frame over said curved track, and mechanism mounted on the car operable by the riders thereon and connected with the sprocket chain of the track to swing the car over the track.

18. In an oscillating swing a plurality of anti-friction rocking bearings comprising a horizontal plate attachable to the rality of anti-friction rocking bearings comprising a horizontal plate attachable to the top rails of a supporting frame and having integral depending flanges and integral upstanding flanges formed on both sides thereof, each of the latter having two spaced uprights centrally disposed, having a terminal upright at each end thereof, and having a semi-circular upwardly opening recess or hearing at said terminal uprights; similar single segments of two disks or wheels, having oppositely disposed transverse pivot bearings at their centers, mounted in said recesses, and inwardly inclined each to each ments disposed for the semi-support of the for rocking supports on which to mount the suspension shaft of the rocker, substansuspension shafts disposed between said centially as specified.

' JOHN L. MARTIN.

tral uprights and carrying the hangers of 5 the car; and an outwardly inclined segment Witnesses:

of a disk integral with the pivot bearings EDWARD HAZLETT, of one of the previously mentioned seg- S. C. DE GROOT.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0."

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